One listen to Bull Halsey throws the rock-n-roll mind into reverse, to a time when young British kids like The Yardbirds, The Animals, and John Mayall's Bluesbreakers were teaching other Brits (and Americans) how much the Delta blues had an impact on rock music. This isn't today's disposable garage-rock re-hash, this is a textbook from Music Appreciation, and class is in session. - Matt Mertha